Adjustable boring cutter with light finishing function

Abstract

This utility model discloses an adjustable boring bar with finishing function, including a fixed post. The top edge of the fixed post has equidistant lower slots, and the top edge of the fixed post has an upper slot corresponding to one side of the lower slots. A cutting tool is slidably connected to the inner side of the lower slots. A lower positioning rod is fixedly installed at the top of the fixed post above the cutting tool. Lower fixing bolts are slidably embedded on both sides of the top of the lower positioning rod, and lower fastening bolts are symmetrically threaded to the center of the top of the lower positioning rod. The positioning plate, positioning teeth, and positioning groove facilitate the worker's fixation of the cutting tool position, reducing the difficulty of positioning the cutting tool. Simultaneously, the positioning teeth embedded in the positioning groove facilitate the worker's judgment of whether the lower fastening bolts are properly tightened, thus ensuring the stability of the cutting tool during use and preventing the cutting tool from falling off due to improper tightening of the lower fastening bolts.

Description

Technical Field

[0001] This utility model relates to the field of boring tool technology, specifically to an adjustable boring tool with finishing function. Background Technology

[0002] An adjustable boring bar with finishing function is a precision tool that integrates boring and finishing processes. It consists of an adjustable tool holder (with a fine-tuning mechanism, adjustable accuracy ±0.001mm), replaceable boring inserts (carbide or CBN material, cutting edge angle 30°-60°), and finishing components (such as diamond honing rods and polishing wheels). The boring bar diameter (suitable for hole diameters from 10 to 300mm) is changed by rotating the adjusting nut on the tool holder. First, the boring inserts perform rough boring and semi-finish boring on the workpiece's inner hole (achieving IT7-IT8 level accuracy). Then, the finishing components are switched to perform micro-cutting or grinding on the hole wall (removing 0.01-0.05mm of material), improving the surface roughness from Ra1.6μm. With a Ra value reduced to 0.02μm, and equipped with an axial feed limit device (to prevent overcutting) and a tool holder vibration damping structure (to reduce chatter), it can be rigidly connected to the machine tool spindle through the tool holder. It is suitable for efficient machining of precision internal holes in molds, hydraulic components, etc., and can complete boring and finishing in one clamping, improving the dimensional accuracy, roundness and surface quality of the hole.

[0003] To this end, China Patent Network published a boring tool with application number 202021341948.0. This boring tool includes: a shank, a neck, a head, and a cutting tool. The neck is provided with two symmetrically arranged chip removal grooves and is located between the shank and the head. The head is provided with two symmetrically arranged chip receiving grooves, which are parallel to the chip removal grooves. The cutting tool is fixed to the head. Through the arrangement of the chip receiving grooves and chip removal grooves, the wear of the boring tool can be effectively reduced, the machining accuracy can be improved, and the machining efficiency can be accelerated.

[0004] Although the above-mentioned applications meet the user's needs to a certain extent, there are still some defects in the use process. The specific problems are as follows: the existing boring tools usually fix the position of the cutting tool by fastening bolts during the positioning process, which can easily cause the cutting tool to fall off when the fastening bolts are not tightened, further reducing the stability of the cutting tool during use. Based on this, this utility model designs an adjustable boring tool with finishing function to solve the above problems. Utility Model Content

[0005] This utility model provides an adjustable boring bar with finishing function, which can effectively solve the problem mentioned in the background art that the existing boring bars are usually fixed in position by fastening bolts during the positioning process, which can easily cause the cutting bar to fall off when the fastening bolts are not tightened, further reducing the stability of the cutting bar during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable boring bar with finishing function, comprising a fixed post, wherein the top edge of the fixed post is provided with a lower groove at equal intervals, and the top edge of the fixed post is provided with an upper groove on one side corresponding to the lower groove. A cutting blade is slidably connected to the inner side of the lower groove, and a lower positioning rod is fixedly installed at the top of the fixed post above the cutting blade. Lower fixing bolts are slidably connected to both sides of the top of the lower positioning rod, and lower fastening bolts are symmetrically threaded to the middle of the top of the lower positioning rod.

[0007] Preferably, a positioning plate is slidably connected to the inner side of the bottom end of the lower positioning rod, a limit groove is formed inside the positioning plate, positioning teeth are fixedly installed at equal intervals at the bottom end of the positioning plate, and positioning grooves are formed at equal intervals at the top end of the blade.

[0008] Preferably, the outer side of the lower fixing bolt is threaded to the inner side of the fixing column, and both the lower fixing bolt and the lower fastening bolt have internal hexagonal grooves on their inner sides.

[0009] Preferably, the bottom end of the lower fastening bolt is in contact with the top end of the positioning plate, and the outer side of the positioning plate is slidably connected to the inner side of the limiting groove.

[0010] Preferably, the outer side of the positioning tooth is engaged with the inner side of the positioning groove, and the end section of the positioning tooth is triangular.

[0011] Preferably, a finishing blade is slidably connected to the inner side of the upper slot, and an upper positioning rod is fixedly installed at the top of the fixing post corresponding to the position above the finishing blade. Upper fixing bolts are slidably connected to both sides of the top of the upper positioning rod, and an upper fastening bolt is threadedly connected to the middle of the top of the upper positioning rod.

[0012] Preferably, the outer side of the upper fixing bolt is threaded to the inner side of the fixing column, and one end of the upper fastening bolt is pressed into contact with the top of the finishing blade.

[0013] Preferably, both the upper fixing bolt and the upper fastening bolt have internal hexagonal grooves on their inner sides.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the positioning plate, positioning teeth and positioning groove make it easier for workers to fix the position of the blade, reducing the difficulty of positioning the blade. At the same time, the positioning teeth embedded in the inner side of the positioning groove make it easier for workers to judge whether the lower fastening bolt is turned in place, thereby ensuring the stability of the blade during use and avoiding the phenomenon of the blade falling off due to the lower fastening bolt not being turned in place. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the positioning groove structure of this utility model; Figure 3 This is a schematic diagram of the positioning plate structure of this utility model; Figure 4 This is a schematic diagram of the finishing blade structure of this utility model; The following are labeled in the diagram: 1. Fixed post; 2. Lower groove; 3. Upper groove; 4. Blade; 5. Lower positioning rod; 6. Lower fixing bolt; 7. Lower fastening bolt; 8. Positioning plate; 9. Positioning tooth; 10. Positioning groove; 11. Finishing blade; 12. Upper positioning rod; 13. Upper fixing bolt; 14. Upper fastening bolt; 15. Limiting groove. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example: Figure 1-4 As shown, this utility model provides a technical solution: an adjustable boring bar with finishing function, including a fixed post 1. The top edge of the fixed post 1 has equidistant lower slots 2. The top edge of the fixed post 1 has an upper slot 3 corresponding to one side of the lower slot 2. A cutting blade 4 is slidably connected to the inner side of the lower slot 2. A lower positioning rod 5 is fixedly installed at the top of the fixed post 1 above the cutting blade 4. Lower fixing bolts 6 are slidably embedded on both sides of the top of the lower positioning rod 5. The outer side of the lower fixing bolts 6 is threaded to the inner side of the fixed post 1, which can fix the position of the lower positioning rod 5 after it has moved. Lower fastening bolts 7 are symmetrically threaded to the middle of the top of the lower positioning rod 5. Both the lower fixing bolts 6 and the lower fastening bolts 7 have internal hexagonal grooves on their inner sides, facilitating rotation of the lower fixing bolts 6 and the lower fastening bolts 7 by the operator.

[0019] A positioning plate 8 is slidably connected to the inner side of the bottom end of the lower positioning rod 5. The bottom end of the lower fastening bolt 7 is pressed against the top end of the positioning plate 8, which can limit the movement of the positioning plate 8. A limiting groove 15 is opened inside the positioning plate 8. The outer side of the positioning plate 8 is slidably connected to the inner side of the limiting groove 15, which can limit the movement direction of the positioning plate 8. Positioning teeth 9 are fixedly installed at equal intervals at the bottom end of the positioning plate 8. The end section of the positioning teeth 9 is triangular. The top end of the blade 4 is provided with positioning grooves 10 at equal intervals. The outer side of the positioning teeth 9 is engaged with the inner side of the positioning grooves 10, which can fix the position of the blade 4 after it has moved.

[0020] A finishing blade 11 is slidably connected to the inner side of the upper slot 3. An upper positioning rod 12 is fixedly installed at the top of the fixing post 1, corresponding to the position above the finishing blade 11. Upper fixing bolts 13 are slidably connected to the top of the upper positioning rod 12 on both sides. The outer side of the upper fixing bolts 13 is threaded to the inner side of the fixing post 1, which can fix the position of the upper positioning rod 12. An upper fastening bolt 14 is threaded to the middle of the top of the upper positioning rod 12. Both the upper fixing bolt 13 and the upper fastening bolt 14 have internal hexagonal grooves on their inner sides. One end of the upper fastening bolt 14 is pressed into contact with the top of the finishing blade 11, which can fix the position of the finishing blade 11.

[0021] The operator moves the blade 4, which slides inside the lower groove 2, thus limiting the direction of movement. Once the blade 4 is in the correct position, the operator moves the lower positioning rod 5, bringing its bottom end into contact with the top of the blade 4. After the lower positioning rod 5 is in the correct position, the operator moves the lower fixing bolt 6, allowing it to pass through the inside of the lower positioning rod 5. The operator then twists the lower fixing bolt 6, connecting its outer side to the inner side of the fixing post 1 via a threaded connection, thus fixing the position of the lower positioning rod 5. Next, the operator twists the lower fastening bolt 7, which connects its outer side to the inner side of the lower positioning rod 5 via a threaded connection, allowing the lower fastening bolt 7 to move. The bottom end of the lower fastening bolt 7 contacts the positioning plate 8, and the positioning plate 8 slides inside the limiting groove 15 within the lower positioning rod 5, allowing the positioning plate 8 to move. The positioning teeth 9, fixedly installed at the bottom of the positioning plate 8, engage with the positioning groove 10 at the top of the blade 4, thus controlling the movement of the blade. The blade 4 is fixed in position to complete the installation of the blade 4. Then, the operator moves the finishing blade 11. By sliding the finishing blade 11 inside the upper groove 3, the movement direction of the finishing blade 11 can be limited. When the finishing blade 11 moves to the appropriate position, the operator moves the upper positioning rod 12 so that the bottom end of the upper positioning rod 12 contacts the top end of the finishing blade 11. Then, the operator moves the upper fixing bolt 13 so that the upper fixing bolt 13 passes through the inner side of the upper positioning rod 12 and twists the upper fixing bolt 13. By connecting the outer side of the upper fixing bolt 13 with the inner side of the fixing post 1, the upper positioning rod 12 can be fixedly connected to the fixing post 1, thus completing the installation of the upper positioning rod 12. After that, the operator twists the upper fastening bolt 14. By connecting the outer side of the upper fastening bolt 14 with the inner side of the upper positioning rod 12, the position of the upper fastening bolt 14 can be moved. By contacting the top end of the upper fastening bolt 14 with the top end of the finishing blade 11, the position of the finishing blade 11 can be fixed, thus completing the installation of the finishing blade 11.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A boring tool with a light finishing function and adjustable, comprising a fixed column (1), characterized in that: The top edge of the fixed column (1) is provided with a lower groove (2) at equal intervals. The top edge of the fixed column (1) is provided with an upper groove (3) on the side corresponding to the lower groove (2). A blade (4) is slidably connected to the inside of the lower groove (2). A lower positioning rod (5) is fixedly installed at the top of the fixed column (1) above the blade (4). Lower fixing bolts (6) are slidably connected to both sides of the top of the lower positioning rod (5). Lower fastening bolts (7) are symmetrically threaded to the middle of the top of the lower positioning rod (5).

2. The adjustable boring cutter with finishing function according to claim 1, characterized in that, The lower positioning rod (5) has a slidably connected positioning plate (8) embedded in the inner side of its bottom end. The positioning plate (8) has a limit groove (15) inside. The positioning plate (8) has positioning teeth (9) fixedly installed at equal intervals at its bottom end. The blade (4) has positioning grooves (10) opened at equal intervals at its top end.

3. The adjustable boring cutter with finishing function according to claim 1, characterized in that, The lower fixing bolt (6) is threaded to the inner side of the fixing column (1) on the outside, and both the lower fixing bolt (6) and the lower fastening bolt (7) have internal hexagonal grooves on their inner sides.

4. The adjustable boring cutter with finishing function according to claim 3, characterized in that, The bottom end of the lower fastening bolt (7) is pressed against the top end of the positioning plate (8), and the outer side of the positioning plate (8) is slidably connected to the inner side of the limiting groove (15).

5. The adjustable boring cutter with finishing function according to claim 2, wherein, The outer side of the positioning tooth (9) is engaged with the inner side of the positioning groove (10), and the end section of the positioning tooth (9) is triangular.

6. The adjustable boring cutter with finishing function according to claim 1, characterized in that, The upper slot (3) is fitted with a slidable finishing blade (11) inside. The top of the fixed column (1) is fixedly installed with an upper positioning rod (12) above the finishing blade (11). The top two sides of the upper positioning rod (12) are fitted with upper fixing bolts (13) and the middle of the top of the upper positioning rod (12) is threaded with an upper fastening bolt (14).

7. The adjustable boring cutter with finishing function according to claim 6, characterized in that, The outer side of the upper fixing bolt (13) is threaded to the inner side of the fixing column (1), and one end of the upper fastening bolt (14) is pressed into contact with the top of the finishing blade (11).

8. The adjustable boring cutter with finishing function according to claim 6, characterized in that, Both the upper fixing bolt (13) and the upper fastening bolt (14) have internal hexagonal grooves on their inner sides.

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